MM54HCT253 datasheet(3/4 Pages) NSC

Part #	MM54HCT253

Description	Dual 4-Channel TRI-STATE-R Multiplexer

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Manufacturer	NSC [National Semiconductor (TI)]

Direct Link	http://www.national.com

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3 / 4 page

AC Electrical Characteristics VCC e 5V TA e 25 C tr e tf e 6 ns CL e 15 pF

Symbol

Parameter

Conditions

Typ

Units

tPHL tPLH

Maximum Propagation

23

ns

Delay Select A or B to Y

tPHL tPLH

Maximum Propagation

20

ns

Delay any Data to Y

tPZH tPZL

Maximum Output Enable Time

RL e 1k

15

ns

Y Output to a Logic Level

tPHZ tPLZ

Maximum Output Disable Time

RL e 1k

11

ns

Y Output to High Impedance State

AC Electrical Characteristics CL e 50 pF tr e tf e 6 ns (unless otherwise specified)

TA e 25 C

74HC

54HC

Symbol

Parameter

Conditions

TA eb40 Cto85 CTA e 55 Cto125 C

Units

Min Typ Max

Min

Max

Min

Max

tPHL tPLH Maximum Propagation

26

40

50

60

ns

Delay Select A or B to Y

tPHL tPLH Maximum Propagation

24

35

44

53

ns

Delay and Data to Y

tPZH tPZL Maximum Output Enable Time RL e 1kX

19

26

33

39

ns

tPHZ tPLZ Maximum Output Disable Time RL e 1kX

13

20

25

30

ns

tTHL tTLH Maximum Output Rise

8

15

19

22

ns

and Fall Time

CIN

Maximum Input Capacitance

5

10

pF

CPD

Power Dissipation

(per package)

Capacitance (Note 5)

Output Enabled

90

pF

Outputs Disabled

25

pF

Note 5

CPD determines the no load dynamic power consumption PDeCPD VCC 2 faICC VCC and the no load dynamic current consumption ISeCPD VCC faICC

Logic Diagram

TLF8434 – 2

3

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MM54HCT253 Datasheet(PDF) 3 Page - National Semiconductor (TI)

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